111112101221210 has 8 divisors (see below), whose sum is σ = 200001782198196. Its totient is φ = 44444840488480.

The previous prime is 111112101221207. The next prime is 111112101221263. The reversal of 111112101221210 is 12122101211111.

It can be written as a sum of positive squares in 2 ways, for example, as 110461760586241 + 650340634969 = 10510079^2 + 806437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555605061051 + ... + 5555605061070.

Almost surely, 2^{111112101221210} is an apocalyptic number.

111112101221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111112101221210 is a deficient number, since it is larger than the sum of its proper divisors (88889680976986).

111112101221210 is a wasteful number, since it uses less digits than its factorization.

111112101221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111210122128.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111112101221210 its reverse (12122101211111), we get a palindrome (123234202432321).

The spelling of 111112101221210 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred one million, two hundred twenty-one thousand, two hundred ten".